One of the best-known stories - and for some the best - of H. F. Lovecraft confronts the reader with both the then unexplored Antarctic and the origins of many elements of the Cthulhu Mythology. Professor Dyer, a prominent geologist, learns that a scientific expedition will soon depart for Antarctica following in the footsteps of the journey he himself had made a few years earlier. In the hope of thwarting the expedition, Dyer decides to give a full account of the tragic events he had survived, this time omitting the passages he had kept silent about on his return for fear of being thought insane. An ancient, alien civilization and its signs, well hidden behind the mountain range of the Mountains of Madness, emerge from the professor's narrative and the pages of the 6th book in the Answers of X series. F. Lovecraft, published by Acid Publications. The novel In the Mountains of Madness was written in 1931, and in 2006 Guillermo del Toro wrote the screenplay for its film adaptation. And it may still remain a dream for him, but the latest reports say that there is a serious possibility that he will make it happen in collaboration with the Netflix platform.